The ProMag SMI30 extends capacity for S&W M&P Shield pistols chambered in 40 S&W, providing shooters with additional rounds in a flush-fitting profile. This blued steel magazine maintains the compact carry characteristics of the Shield platform while adding firepower when needed most.
What Makes This Different
Unlike polymer alternatives, the SMI30 features heat-treated blued steel construction that resists deformation under pressure and maintains consistent spring tension over thousands of loading cycles. The precision-formed body walls ensure reliable feeding with various 40 S&W bullet weights and profiles. Internal dimensions match factory specifications to guarantee proper cartridge presentation and ejection timing.Key Features
- 7-round capacity increases firepower by 1-2 rounds over standard magazines
- Heat-treated blued steel construction resists wear and corrosion
- Flush-fit design maintains concealability and holster compatibility
- High-tensile spring provides consistent feeding pressure
- Removable floorplate allows cleaning and maintenance
- Compatible with all S&W M&P Shield models in 40 S&W
- Witness holes indicate remaining cartridge count
Technical Specs
- Capacity: 7 rounds of 40 S&W
- Material: Heat-treated blued steel body
- Spring: High-carbon steel coil spring
- Follower: Anti-tilt polymer construction
- Compatibility: S&W M&P Shield 40 S&W models
- Finish: Traditional blued steel
- Weight: Approximately 3.2 ounces loaded
- Country of Origin: USA
